pg_plan_advice: Handle non-repeatable TABLESAMPLE scans.
When a tablesample routine says that it is not repeatable across
scans, set_tablesample_rel_pathlist will (usually) materialize it,
confusing pg_plan_advice's plan walker machinery. To fix, update that
machinery to view such Material paths as essentially an extension of
the underlying scan.
Reported-by: Alexander Lakhin <exclusion@gmail.com>
Discussion: http://postgr.es/m/CA+TgmobOOmmXSJz3e+cjTY-bA1+W0dqVDqzxUBEvGtW62whYGg@mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/3311ccc3d24bf83fb26a8af81ea68a8fcc295c26
Modified Files
--------------
contrib/pg_plan_advice/Makefile | 2 ++
contrib/pg_plan_advice/expected/scan.out | 38 ++++++++++++++++++++++++++++++++
contrib/pg_plan_advice/pgpa_join.c | 12 ++++++----
contrib/pg_plan_advice/pgpa_scan.c | 11 +++++++++
contrib/pg_plan_advice/pgpa_walker.c | 29 ++++++++++++++++++++++++
contrib/pg_plan_advice/pgpa_walker.h | 1 +
contrib/pg_plan_advice/sql/scan.sql | 12 ++++++++++
7 files changed, 101 insertions(+), 4 deletions(-)
